WASHINGTON — The Pentagon says fragmentary remains of a Marine who perished in a failed helicopter rescue of the crew of the merchant ship Mayaguez in May 1975 will be buried Wednesday at Arlington National Cemetery.

The Pentagon said it accounted for Pfc. Daniel A. Benedett of Seattle on January 30 using "circumstantial evidence and DNA process of elimination." Remains of 12 other U.S. servicemen who also were aboard the helicopter had been accounted for previously, following a series of searches off the coast of Cambodia.

Their helicopter crashed after coming under heavy fire; 13 aboard were rescued at sea and 13 others were declared missing.

The Mayaguez incident is considered the last U.S. military engagement in Southeast Asia after the long war in Vietnam.